CLASS-XI NCERT CHEMISTRY

UNIT-1: Some Basic Concepts of Chemistry
13 Topics | 2 Quizzes
1.0 Introduction
1.1 Importance of Chemistry
1.2 Nature of Matter
1.3 Properties of Matter and their Measurement
1.4 Uncertainty in Measurement
1.5 Laws of Chemical Combinations
1.6 Dalton’s Atomic Theory
1.7 Atomic and Molecular Masses
1.8 Mole Concept and Molar Masses
1.9 Percentage Composition
1.10 Stoichiometry and Stoichiometric Calculations
1.11 Summary
1.12 Exercise Problems and Solutions
NCERT Exemplar MCQs
NEET PYQs
UNIT-2: Structure of Atom
9 Topics | 2 Quizzes
2.0 Introduction
2.1 Discovery of Sub-atomic Particles
2.2 Atomic Models
2.3 Developments Leading to the Bohr’s Model of Atom
2.4 Bohr’s Model for Hydrogen Atom
2.5 Towards Quantum Mechanical Model of the Atom
2.6 Quantum Mechanical Model of Atom
2.7 Summary
2.8 Exercise Problems and Solutions
NCERT Exemplar MCQs
NEET PYQs
UNIT-3: Classification of Elements and Periodicity in Properties
10 Topics | 2 Quizzes
3.0 Introduction
3.1 Why do we Need to Classify Elements?
3.2 Genesis of Periodic Classification
3.3 Modern Periodic Law and the Present Form of the Periodic Table
3.4 Nomenclature of Elements with Atomic Numbers > 100
3.5 Electronic Configurations of Elements and the Periodic Table
3.6 Electronic Configurations and Types of Elements: s-, p-, d-, f- Blocks
3.7 Periodic Trends in Properties of Elements
3.8 Summary
3.9 Exercise Problems and Solutions
NCERT Exemplar MCQs
NEET PYQs
UNIT-4: Chemical Bonding and Molecular Structure
12 Topics | 2 Quizzes
4.0 Introduction
4.1 Kossel- Lewis Approach to Chemical Bonding
4.2 Ionic or Electrovalent Bond
4.3 Bond Parameters
4.4 The Valence Shell Electron Pair Repulsion
4.5 Valence Bond Theory
4.6 Hybridisation
4.7 Molecular Orbital Theory
4.8 Bonding in Some Homonuclear Diatomic Molecules
4.9 Hydrogen Bonding
4.10 Summary
4.11 Exercise Problems and Solutions
NCERT Exemplar MCQs
NEET PYQs
UNIT-5: Thermodynamics
10 Topics | 2 Quizzes
5.0 Introduction
5.1 Thermodynamic Terms
5.2 Applications
5.3 Measurement of ΔU and ΔH: Calorimetry
5.4 Enthalpy Change, ΔrH of a Reaction – Reaction Enthalpy
5.5 Enthalpies for Different Types of Reactions
5.6 Spontaneity
5.7 Gibbs Energy Change and Equilibrium
5.8 Summary
5.9 Exercise Problems and Solutions
NCERT Exampler Questions
NEET PYQs
UNIT-6: Equilibrium
16 Topics | 2 Quizzes
6.0 Introduction
6.1 Equilibrium in Physical Processes
6.2 Equilibrium in Chemical Processes – Dynamic Equilibrium
6.3 Law of Chemical Equilibrium and Equilibrium Constant
6.4 Homogeneous Equilibria
6.5 Heterogeneous Equilibria
6.6 Applications of Equilibrium Constants
6.7 Relationship between Equilibrium Constant K Reaction Quotient Q and Gibbs Energy G
6.8 Factors Affecting Equilibria
6.9 Ionic Equilibrium in Solution
6.10 Acids, Bases and Salts
6.11 Ionization of Acids and Bases
6.12 Buffer Solutions
6.13 Solubility Equilibria of Sparingly Soluble Salts
6.14 Summary
6.15 Exercise Problems and Solutions
NCERT Exampler Questions
NEET PYQs
UNIT-7: Redox Reaction
7 Topics | 2 Quizzes
7.0 Introduction
7.1 Classical Idea of Redox Reactions-Oxidation and Reduction Reactions
7.2 Redox Reactions in Terms of Electron Transfer Reactions
7.3 Oxidation Number
7.4 Redox Reactions and Electrode Processes
7.5 Summary
7.6 Exercise Problems and Solutions
NCERT Exampler
NEET PYQs
UNIT-8: Organic Chemistry – Some Basic Principles and Techniques
13 Topics | 2 Quizzes
8.0 Introduction
8.1 General Introduction
8.2 Tetravalence of Carbon: Shapes of Organic Compounds
8.3 Structural Representations of Organic Compounds
8.4 Classification of Organic Compounds
8.5 Nomenclature of Organic Compounds
8.6 Isomerism
8.7 Fundamental Concepts in Organic Reaction Mechanism
8.8 Methods of Purification of Organic Compounds
8.9 Qualitative Analysis of Organic Compounds
8.10 Quantitative Analysis
8.11 Summary
8.12 Exercise Problems and Solutions
NCERT Exemplar Questions
NEET PYQs
UNIT-9: Hydrocarbons
9 Topics | 2 Quizzes
9.0 Introduction
9.1 Classification
9.2 Alkanes
9.3 Alkenes
9.4 Alkynes
9.5 Aromatic Hydrocarbon
9.6 Carcinogenicity and Toxicity
9.7 Summary
9.8 Exercise Problems and Solutions
NCERT Exemplar
NEET PYQs
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UNIT-1: Some Basic Concepts of Chemistry

CLASS-XI NCERT CHEMISTRY UNIT-1: Some Basic Concepts of Chemistry

Chemistry is the science of molecules and their transformations. It is the science not so much of the one hundred elements but of the infinite variety of molecules that may be built from them. The branch of science that studies the preparation, properties, structure, and reactions of material substances is called chemistry.

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